ANALYZE_STATUS
The ANALYZE_STATUS table provides information about the running tasks that collect statistics and a limited number of history tasks.
Starting from TiDB v6.1.0, the ANALYZE_STATUS table supports showing cluster-level tasks. Even after a TiDB restart, you can still view task records before the restart using this table. Before TiDB v6.1.0, the ANALYZE_STATUS table can only show instance-level tasks, and task records are cleared after a TiDB restart.
Starting from TiDB v6.1.0, you can view the history tasks within the last 7 days through the system table mysql.analyze_jobs.
USE information_schema;
DESC analyze_status;
+----------------------+---------------------+------+------+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------------------+---------------------+------+------+---------+-------+
| TABLE_SCHEMA | varchar(64) | YES | | NULL | |
| TABLE_NAME | varchar(64) | YES | | NULL | |
| PARTITION_NAME | varchar(64) | YES | | NULL | |
| JOB_INFO | longtext | YES | | NULL | |
| PROCESSED_ROWS | bigint(64) unsigned | YES | | NULL | |
| START_TIME | datetime | YES | | NULL | |
| END_TIME | datetime | YES | | NULL | |
| STATE | varchar(64) | YES | | NULL | |
| FAIL_REASON | longtext | YES | | NULL | |
| INSTANCE | varchar(512) | YES | | NULL | |
| PROCESS_ID | bigint(64) unsigned | YES | | NULL | |
| REMAINING_SECONDS | bigint(64) unsigned | YES | | NULL | |
| PROGRESS | varchar(20) | YES | | NULL | |
| ESTIMATED_TOTAL_ROWS | bigint(64) unsigned | YES | | NULL | |
+----------------------+---------------------+------+------+---------+-------+
14 rows in set (0.00 sec)
SELECT * FROM information_schema.analyze_status;
+--------------+------------+----------------+--------------------------------------------------------------------+----------------+---------------------+---------------------+----------+-------------+----------------+------------+----------------------+----------+-----------------------+
| TABLE_SCHEMA | TABLE_NAME | PARTITION_NAME | JOB_INFO | PROCESSED_ROWS | START_TIME | END_TIME | STATE | FAIL_REASON | INSTANCE | PROCESS_ID | REMAINING_SECONDS | PROGRESS | ESTIMATED_TOTAL_ROWS |
+--------------+------------+----------------+--------------------------------------------------------------------+----------------+---------------------+---------------------+----------+-------------+----------------+------------+----------------------+----------+-----------------------+
| test | t | p1 | analyze table all columns with 256 buckets, 500 topn, 1 samplerate | 0 | 2022-05-27 11:30:12 | 2022-05-27 11:30:12 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL |
| test | t | p0 | analyze table all columns with 256 buckets, 500 topn, 1 samplerate | 0 | 2022-05-27 11:30:12 | 2022-05-27 11:30:12 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL |
| test | t | p1 | analyze index idx | 0 | 2022-05-27 11:29:46 | 2022-05-27 11:29:46 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL |
| test | t | p0 | analyze index idx | 0 | 2022-05-27 11:29:46 | 2022-05-27 11:29:46 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL |
| test | t | p1 | analyze columns | 0 | 2022-05-27 11:29:46 | 2022-05-27 11:29:46 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL |
| test | t | p0 | analyze columns | 0 | 2022-05-27 11:29:46 | 2022-05-27 11:29:46 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL |
| test | t | p1 | analyze table all columns with 256 buckets, 500 topn, 1 samplerate | 1000000 | 2022-05-27 11:30:12 | 2022-05-27 11:40:12 | running | NULL | 127.0.0.1:4000 | 690208308 | 600s | 0.25 | 4000000 |
+--------------+------------+----------------+--------------------------------------------------------------------+----------------+---------------------+---------------------+----------+-------------+----------------+------------+----------------------+----------+-----------------------+
6 rows in set (0.00 sec)
Fields in the ANALYZE_STATUS table are described as follows:
TABLE_SCHEMA: The name of the database to which the table belongs.TABLE_NAME: The name of the table.PARTITION_NAME: The name of the partitioned table.JOB_INFO: The information of theANALYZEtask. If an index is analyzed, this information will include the index name. Whentidb_analyze_version = 2, this information will include configuration items such as sample rate.PROCESSED_ROWS: The number of rows that have been processed.START_TIME: The start time of theANALYZEtask.END_TIME: The end time of theANALYZEtask.STATE: The execution status of theANALYZEtask. Its value can bepending,running,finishedorfailed.FAIL_REASON: The reason why the task fails. If the execution is successful, the value isNULL.INSTANCE: The TiDB instance that executes the task.PROCESS_ID: The process ID that executes the task.REMAINING_SECONDS: The estimated time (in seconds) remaining for the task to complete.PROGRESS: The progress of the task.ESTIMATED_TOTAL_ROWS: The total rows that need to be analyzed by the task.